CVE-2025-40580: Siemens Scalance LPE9403 Firmware

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

A vulnerability has been identified in SCALANCE LPE9403 (6GK5998-3GS00-2AC2) (All versions < V4.0 HF0). Affected devices are vulnerable to a stack-based buffer overflow. This could allow a non-privileged local attacker to execute arbitrary code on the device or to cause a denial of service condition.

Affected products

• Siemens Scalance LPE9403 Firmware: affected versions not specified

Published 2025-05-13. Last modified 2026-06-17.